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Finding the Fourth Proportional to 554,962.88, 765,854.24 and 300,319.53

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Solution

The fourth proportional to 554,962.88, 765,854.24 and 300,319.53 is: 414,443.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,962.88 : 765,854.24 = 300,319.53 : x
  2. Step 2: Convert to fraction form
    554,962.88/765,854.24 = 300,319.53/x
  3. Step 3: Cross multiply
    554,962.88x = 765,854.24 × 300,319.53
  4. Step 4: Simplify right side
    554,962.88x = 230,000,983,903.71
  5. Step 5: Solve for x
    x = 230,000,983,903.71/554,962.88
  6. Step 6: Final answer
    x = 414,443.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.