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Finding the Fourth Proportional to 860,710.64, 1,187,777.52 and 478,737.45

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Solution

The fourth proportional to 860,710.64, 1,187,777.52 and 478,737.45 is: 660,655.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,710.64 : 1,187,777.52 = 478,737.45 : x
  2. Step 2: Convert to fraction form
    860,710.64/1,187,777.52 = 478,737.45/x
  3. Step 3: Cross multiply
    860,710.64x = 1,187,777.52 × 478,737.45
  4. Step 4: Simplify right side
    860,710.64x = 568,633,581,092.12
  5. Step 5: Solve for x
    x = 568,633,581,092.12/860,710.64
  6. Step 6: Final answer
    x = 660,655.93

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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.