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Finding the Fourth Proportional to 708,670.24, 977,989.54 and 402,759.53

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Solution

The fourth proportional to 708,670.24, 977,989.54 and 402,759.53 is: 555,822.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,670.24 : 977,989.54 = 402,759.53 : x
  2. Step 2: Convert to fraction form
    708,670.24/977,989.54 = 402,759.53/x
  3. Step 3: Cross multiply
    708,670.24x = 977,989.54 × 402,759.53
  4. Step 4: Simplify right side
    708,670.24x = 393,894,607,475.32
  5. Step 5: Solve for x
    x = 393,894,607,475.32/708,670.24
  6. Step 6: Final answer
    x = 555,822.14

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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.