Home / 815,693.64-1,124,779.58-509,658.24

Finding the Fourth Proportional to 815,693.64, 1,124,779.58 and 509,658.24

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Solution

The fourth proportional to 815,693.64, 1,124,779.58 and 509,658.24 is: 702,780.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,693.64 : 1,124,779.58 = 509,658.24 : x
  2. Step 2: Convert to fraction form
    815,693.64/1,124,779.58 = 509,658.24/x
  3. Step 3: Cross multiply
    815,693.64x = 1,124,779.58 × 509,658.24
  4. Step 4: Simplify right side
    815,693.64x = 573,253,181,130.74
  5. Step 5: Solve for x
    x = 573,253,181,130.74/815,693.64
  6. Step 6: Final answer
    x = 702,780.01

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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.