Home / 1,680,123,218.40-2,519,429,000.40-644,639,954.40

Finding the Fourth Proportional to 1,680,123,218.40, 2,519,429,000.40 and 644,639,954.40

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Solution

The fourth proportional to 1,680,123,218.40, 2,519,429,000.40 and 644,639,954.40 is: 966,669,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680,123,218.40 : 2,519,429,000.40 = 644,639,954.40 : x
  2. Step 2: Convert to fraction form
    1,680,123,218.40/2,519,429,000.40 = 644,639,954.40/x
  3. Step 3: Cross multiply
    1,680,123,218.40x = 2,519,429,000.40 × 644,639,954.40
  4. Step 4: Simplify right side
    1,680,123,218.40x = 1,624,124,595,931,893,504
  5. Step 5: Solve for x
    x = 1,624,124,595,931,893,504/1,680,123,218.40
  6. Step 6: Final answer
    x = 966,669,931.20

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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.