Home / 753,351.40-1,130,027.10-438,423.40

Finding the Fourth Proportional to 753,351.40, 1,130,027.10 and 438,423.40

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Solution

The fourth proportional to 753,351.40, 1,130,027.10 and 438,423.40 is: 657,635.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,351.40 : 1,130,027.10 = 438,423.40 : x
  2. Step 2: Convert to fraction form
    753,351.40/1,130,027.10 = 438,423.40/x
  3. Step 3: Cross multiply
    753,351.40x = 1,130,027.10 × 438,423.40
  4. Step 4: Simplify right side
    753,351.40x = 495,430,323,274.14
  5. Step 5: Solve for x
    x = 495,430,323,274.14/753,351.40
  6. Step 6: Final answer
    x = 657,635.10

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Half scale
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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.