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Finding the Fourth Proportional to 607,931.80, 912,416.10 and 271,490.20

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Solution

The fourth proportional to 607,931.80, 912,416.10 and 271,490.20 is: 407,466.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,931.80 : 912,416.10 = 271,490.20 : x
  2. Step 2: Convert to fraction form
    607,931.80/912,416.10 = 271,490.20/x
  3. Step 3: Cross multiply
    607,931.80x = 912,416.10 × 271,490.20
  4. Step 4: Simplify right side
    607,931.80x = 247,712,029,472.22
  5. Step 5: Solve for x
    x = 247,712,029,472.22/607,931.80
  6. Step 6: Final answer
    x = 407,466.81

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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.