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Finding the Fourth Proportional to 708,335.52, 977,474.51 and 386,038.68

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Solution

The fourth proportional to 708,335.52, 977,474.51 and 386,038.68 is: 532,717.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,335.52 : 977,474.51 = 386,038.68 : x
  2. Step 2: Convert to fraction form
    708,335.52/977,474.51 = 386,038.68/x
  3. Step 3: Cross multiply
    708,335.52x = 977,474.51 × 386,038.68
  4. Step 4: Simplify right side
    708,335.52x = 377,342,967,643.85
  5. Step 5: Solve for x
    x = 377,342,967,643.85/708,335.52
  6. Step 6: Final answer
    x = 532,717.84

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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.