Home / 688,632.30-1,032,948.45-215,316.90

Finding the Fourth Proportional to 688,632.30, 1,032,948.45 and 215,316.90

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Solution

The fourth proportional to 688,632.30, 1,032,948.45 and 215,316.90 is: 322,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,632.30 : 1,032,948.45 = 215,316.90 : x
  2. Step 2: Convert to fraction form
    688,632.30/1,032,948.45 = 215,316.90/x
  3. Step 3: Cross multiply
    688,632.30x = 1,032,948.45 × 215,316.90
  4. Step 4: Simplify right side
    688,632.30x = 222,411,258,113.81
  5. Step 5: Solve for x
    x = 222,411,258,113.81/688,632.30
  6. Step 6: Final answer
    x = 322,975.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.