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Finding the Fourth Proportional to 555,641.99, 766,784.28 and 313,924.47

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Solution

The fourth proportional to 555,641.99, 766,784.28 and 313,924.47 is: 433,214.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,641.99 : 766,784.28 = 313,924.47 : x
  2. Step 2: Convert to fraction form
    555,641.99/766,784.28 = 313,924.47/x
  3. Step 3: Cross multiply
    555,641.99x = 766,784.28 × 313,924.47
  4. Step 4: Simplify right side
    555,641.99x = 240,712,348,703.33
  5. Step 5: Solve for x
    x = 240,712,348,703.33/555,641.99
  6. Step 6: Final answer
    x = 433,214.83

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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.