Home / 1,429,272,031.70-2,143,908,047.55-509,178,386.90

Finding the Fourth Proportional to 1,429,272,031.70, 2,143,908,047.55 and 509,178,386.90

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Solution

The fourth proportional to 1,429,272,031.70, 2,143,908,047.55 and 509,178,386.90 is: 763,767,580.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429,272,031.70 : 2,143,908,047.55 = 509,178,386.90 : x
  2. Step 2: Convert to fraction form
    1,429,272,031.70/2,143,908,047.55 = 509,178,386.90/x
  3. Step 3: Cross multiply
    1,429,272,031.70x = 2,143,908,047.55 × 509,178,386.90
  4. Step 4: Simplify right side
    1,429,272,031.70x = 1,091,631,641,313,437,440
  5. Step 5: Solve for x
    x = 1,091,631,641,313,437,440/1,429,272,031.70
  6. Step 6: Final answer
    x = 763,767,580.35

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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.