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Finding the Fourth Proportional to 598,219.80, 897,329.70 and 385,643.40

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Solution

The fourth proportional to 598,219.80, 897,329.70 and 385,643.40 is: 578,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,219.80 : 897,329.70 = 385,643.40 : x
  2. Step 2: Convert to fraction form
    598,219.80/897,329.70 = 385,643.40/x
  3. Step 3: Cross multiply
    598,219.80x = 897,329.70 × 385,643.40
  4. Step 4: Simplify right side
    598,219.80x = 346,049,276,428.98
  5. Step 5: Solve for x
    x = 346,049,276,428.98/598,219.80
  6. Step 6: Final answer
    x = 578,465.10

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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.