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Finding the Fourth Proportional to 465,784.40, 697,364.40 and 418,545.20

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Solution

The fourth proportional to 465,784.40, 697,364.40 and 418,545.20 is: 626,638.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,784.40 : 697,364.40 = 418,545.20 : x
  2. Step 2: Convert to fraction form
    465,784.40/697,364.40 = 418,545.20/x
  3. Step 3: Cross multiply
    465,784.40x = 697,364.40 × 418,545.20
  4. Step 4: Simplify right side
    465,784.40x = 291,878,522,270.88
  5. Step 5: Solve for x
    x = 291,878,522,270.88/465,784.40
  6. Step 6: Final answer
    x = 626,638.68

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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.