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Finding the Fourth Proportional to 865,875.80, 1,298,813.70 and 304,837.40

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Solution

The fourth proportional to 865,875.80, 1,298,813.70 and 304,837.40 is: 457,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,875.80 : 1,298,813.70 = 304,837.40 : x
  2. Step 2: Convert to fraction form
    865,875.80/1,298,813.70 = 304,837.40/x
  3. Step 3: Cross multiply
    865,875.80x = 1,298,813.70 × 304,837.40
  4. Step 4: Simplify right side
    865,875.80x = 395,926,991,392.38
  5. Step 5: Solve for x
    x = 395,926,991,392.38/865,875.80
  6. Step 6: Final answer
    x = 457,256.10

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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.