Home / 1,038,499.90-1,557,749.85-407,434.30

Finding the Fourth Proportional to 1,038,499.90, 1,557,749.85 and 407,434.30

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Solution

The fourth proportional to 1,038,499.90, 1,557,749.85 and 407,434.30 is: 611,151.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,499.90 : 1,557,749.85 = 407,434.30 : x
  2. Step 2: Convert to fraction form
    1,038,499.90/1,557,749.85 = 407,434.30/x
  3. Step 3: Cross multiply
    1,038,499.90x = 1,557,749.85 × 407,434.30
  4. Step 4: Simplify right side
    1,038,499.90x = 634,680,719,709.86
  5. Step 5: Solve for x
    x = 634,680,719,709.86/1,038,499.90
  6. Step 6: Final answer
    x = 611,151.45

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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.