Home / 869,439.40-1,304,547.90-308,876.20

Finding the Fourth Proportional to 869,439.40, 1,304,547.90 and 308,876.20

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Solution

The fourth proportional to 869,439.40, 1,304,547.90 and 308,876.20 is: 463,452.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,439.40 : 1,304,547.90 = 308,876.20 : x
  2. Step 2: Convert to fraction form
    869,439.40/1,304,547.90 = 308,876.20/x
  3. Step 3: Cross multiply
    869,439.40x = 1,304,547.90 × 308,876.20
  4. Step 4: Simplify right side
    869,439.40x = 402,943,798,069.98
  5. Step 5: Solve for x
    x = 402,943,798,069.98/869,439.40
  6. Step 6: Final answer
    x = 463,452.42

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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.