Home / 885,780.76-1,222,445.10-503,784.76

Finding the Fourth Proportional to 885,780.76, 1,222,445.10 and 503,784.76

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Solution

The fourth proportional to 885,780.76, 1,222,445.10 and 503,784.76 is: 695,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,780.76 : 1,222,445.10 = 503,784.76 : x
  2. Step 2: Convert to fraction form
    885,780.76/1,222,445.10 = 503,784.76/x
  3. Step 3: Cross multiply
    885,780.76x = 1,222,445.10 × 503,784.76
  4. Step 4: Simplify right side
    885,780.76x = 615,849,211,316.68
  5. Step 5: Solve for x
    x = 615,849,211,316.68/885,780.76
  6. Step 6: Final answer
    x = 695,261.45

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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.