Home / 1,429,272,029.20-2,143,908,043.80-509,178,384.40

Finding the Fourth Proportional to 1,429,272,029.20, 2,143,908,043.80 and 509,178,384.40

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Solution

The fourth proportional to 1,429,272,029.20, 2,143,908,043.80 and 509,178,384.40 is: 763,767,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,272,029.20 : 2,143,908,043.80 = 509,178,384.40 : x
  2. Step 2: Convert to fraction form
    1,429,272,029.20/2,143,908,043.80 = 509,178,384.40/x
  3. Step 3: Cross multiply
    1,429,272,029.20x = 2,143,908,043.80 × 509,178,384.40
  4. Step 4: Simplify right side
    1,429,272,029.20x = 1,091,631,634,044,248,320
  5. Step 5: Solve for x
    x = 1,091,631,634,044,248,320/1,429,272,029.20
  6. Step 6: Final answer
    x = 763,767,576.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.