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Finding the Fourth Proportional to 634,712.85, 875,673.87 and 417,038.78

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Solution

The fourth proportional to 634,712.85, 875,673.87 and 417,038.78 is: 575,362.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,712.85 : 875,673.87 = 417,038.78 : x
  2. Step 2: Convert to fraction form
    634,712.85/875,673.87 = 417,038.78/x
  3. Step 3: Cross multiply
    634,712.85x = 875,673.87 × 417,038.78
  4. Step 4: Simplify right side
    634,712.85x = 365,189,962,422.68
  5. Step 5: Solve for x
    x = 365,189,962,422.68/634,712.85
  6. Step 6: Final answer
    x = 575,362.48

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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.