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Finding the Fourth Proportional to 556,118.40, 767,404.80 and 314,412.80

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Solution

The fourth proportional to 556,118.40, 767,404.80 and 314,412.80 is: 433,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,118.40 : 767,404.80 = 314,412.80 : x
  2. Step 2: Convert to fraction form
    556,118.40/767,404.80 = 314,412.80/x
  3. Step 3: Cross multiply
    556,118.40x = 767,404.80 × 314,412.80
  4. Step 4: Simplify right side
    556,118.40x = 241,281,891,901.44
  5. Step 5: Solve for x
    x = 241,281,891,901.44/556,118.40
  6. Step 6: Final answer
    x = 433,867.85

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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.