Home / 884,041.21-1,220,123.64-521,554.20

Finding the Fourth Proportional to 884,041.21, 1,220,123.64 and 521,554.20

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Solution

The fourth proportional to 884,041.21, 1,220,123.64 and 521,554.20 is: 719,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,041.21 : 1,220,123.64 = 521,554.20 : x
  2. Step 2: Convert to fraction form
    884,041.21/1,220,123.64 = 521,554.20/x
  3. Step 3: Cross multiply
    884,041.21x = 1,220,123.64 × 521,554.20
  4. Step 4: Simplify right side
    884,041.21x = 636,360,608,961.29
  5. Step 5: Solve for x
    x = 636,360,608,961.29/884,041.21
  6. Step 6: Final answer
    x = 719,831.39

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Double scale
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Similar ratio
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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.