Home / 650,431.02-975,646.53-428,763.18

Finding the Fourth Proportional to 650,431.02, 975,646.53 and 428,763.18

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Solution

The fourth proportional to 650,431.02, 975,646.53 and 428,763.18 is: 643,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,431.02 : 975,646.53 = 428,763.18 : x
  2. Step 2: Convert to fraction form
    650,431.02/975,646.53 = 428,763.18/x
  3. Step 3: Cross multiply
    650,431.02x = 975,646.53 × 428,763.18
  4. Step 4: Simplify right side
    650,431.02x = 418,321,308,758.77
  5. Step 5: Solve for x
    x = 418,321,308,758.77/650,431.02
  6. Step 6: Final answer
    x = 643,144.77

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.