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Finding the Fourth Proportional to 860,594.60, 1,187,603.64 and 478,613.20

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Solution

The fourth proportional to 860,594.60, 1,187,603.64 and 478,613.20 is: 660,476.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,594.60 : 1,187,603.64 = 478,613.20 : x
  2. Step 2: Convert to fraction form
    860,594.60/1,187,603.64 = 478,613.20/x
  3. Step 3: Cross multiply
    860,594.60x = 1,187,603.64 × 478,613.20
  4. Step 4: Simplify right side
    860,594.60x = 568,402,778,472.05
  5. Step 5: Solve for x
    x = 568,402,778,472.05/860,594.60
  6. Step 6: Final answer
    x = 660,476.81

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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.