Home / 708,156,302.10-977,256,638.27-390,609,426.70

Finding the Fourth Proportional to 708,156,302.10, 977,256,638.27 and 390,609,426.70

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Solution

The fourth proportional to 708,156,302.10, 977,256,638.27 and 390,609,426.70 is: 539,041,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,156,302.10 : 977,256,638.27 = 390,609,426.70 : x
  2. Step 2: Convert to fraction form
    708,156,302.10/977,256,638.27 = 390,609,426.70/x
  3. Step 3: Cross multiply
    708,156,302.10x = 977,256,638.27 × 390,609,426.70
  4. Step 4: Simplify right side
    708,156,302.10x = 381,725,655,214,147,264
  5. Step 5: Solve for x
    x = 381,725,655,214,147,264/708,156,302.10
  6. Step 6: Final answer
    x = 539,041,528.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.