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Finding the Fourth Proportional to 555,478.05, 766,622.04 and 313,776.18

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Solution

The fourth proportional to 555,478.05, 766,622.04 and 313,776.18 is: 433,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,478.05 : 766,622.04 = 313,776.18 : x
  2. Step 2: Convert to fraction form
    555,478.05/766,622.04 = 313,776.18/x
  3. Step 3: Cross multiply
    555,478.05x = 766,622.04 × 313,776.18
  4. Step 4: Simplify right side
    555,478.05x = 240,547,735,215.01
  5. Step 5: Solve for x
    x = 240,547,735,215.01/555,478.05
  6. Step 6: Final answer
    x = 433,046.34

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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.