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Finding the Fourth Proportional to 635,457.86, 877,272.30 and 489,945.80

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Solution

The fourth proportional to 635,457.86, 877,272.30 and 489,945.80 is: 676,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,457.86 : 877,272.30 = 489,945.80 : x
  2. Step 2: Convert to fraction form
    635,457.86/877,272.30 = 489,945.80/x
  3. Step 3: Cross multiply
    635,457.86x = 877,272.30 × 489,945.80
  4. Step 4: Simplify right side
    635,457.86x = 429,815,878,841.34
  5. Step 5: Solve for x
    x = 429,815,878,841.34/635,457.86
  6. Step 6: Final answer
    x = 676,387.70

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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.