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Finding the Fourth Proportional to 522,035.40, 783,053.10 and 490,931.40

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Solution

The fourth proportional to 522,035.40, 783,053.10 and 490,931.40 is: 736,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,035.40 : 783,053.10 = 490,931.40 : x
  2. Step 2: Convert to fraction form
    522,035.40/783,053.10 = 490,931.40/x
  3. Step 3: Cross multiply
    522,035.40x = 783,053.10 × 490,931.40
  4. Step 4: Simplify right side
    522,035.40x = 384,425,354,657.34
  5. Step 5: Solve for x
    x = 384,425,354,657.34/522,035.40
  6. Step 6: Final answer
    x = 736,397.10

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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.