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Finding the Fourth Proportional to 341,397.40, 478,656.20 and 341,397.40

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Solution

The fourth proportional to 341,397.40, 478,656.20 and 341,397.40 is: 478,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,397.40 : 478,656.20 = 341,397.40 : x
  2. Step 2: Convert to fraction form
    341,397.40/478,656.20 = 341,397.40/x
  3. Step 3: Cross multiply
    341,397.40x = 478,656.20 × 341,397.40
  4. Step 4: Simplify right side
    341,397.40x = 163,411,982,173.88
  5. Step 5: Solve for x
    x = 163,411,982,173.88/341,397.40
  6. Step 6: Final answer
    x = 478,656.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.