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Finding the Fourth Proportional to 598,279.80, 897,419.70 and 385,703.40

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Solution

The fourth proportional to 598,279.80, 897,419.70 and 385,703.40 is: 578,555.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,279.80 : 897,419.70 = 385,703.40 : x
  2. Step 2: Convert to fraction form
    598,279.80/897,419.70 = 385,703.40/x
  3. Step 3: Cross multiply
    598,279.80x = 897,419.70 × 385,703.40
  4. Step 4: Simplify right side
    598,279.80x = 346,137,829,516.98
  5. Step 5: Solve for x
    x = 346,137,829,516.98/598,279.80
  6. Step 6: Final answer
    x = 578,555.10

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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.