Home / 860,423.61-1,187,385.57-478,442.19

Finding the Fourth Proportional to 860,423.61, 1,187,385.57 and 478,442.19

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Solution

The fourth proportional to 860,423.61, 1,187,385.57 and 478,442.19 is: 660,250.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,423.61 : 1,187,385.57 = 478,442.19 : x
  2. Step 2: Convert to fraction form
    860,423.61/1,187,385.57 = 478,442.19/x
  3. Step 3: Cross multiply
    860,423.61x = 1,187,385.57 × 478,442.19
  4. Step 4: Simplify right side
    860,423.61x = 568,095,350,092.99
  5. Step 5: Solve for x
    x = 568,095,350,092.99/860,423.61
  6. Step 6: Final answer
    x = 660,250.77

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Half scale
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Double scale
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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.