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Finding the Fourth Proportional to 708,087.77, 977,148.72 and 385,800.17

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Solution

The fourth proportional to 708,087.77, 977,148.72 and 385,800.17 is: 532,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,087.77 : 977,148.72 = 385,800.17 : x
  2. Step 2: Convert to fraction form
    708,087.77/977,148.72 = 385,800.17/x
  3. Step 3: Cross multiply
    708,087.77x = 977,148.72 × 385,800.17
  4. Step 4: Simplify right side
    708,087.77x = 376,984,144,734.15
  5. Step 5: Solve for x
    x = 376,984,144,734.15/708,087.77
  6. Step 6: Final answer
    x = 532,397.48

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1.5x scale

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.