Home / 687,237.86-948,420.19-429,267.54

Finding the Fourth Proportional to 687,237.86, 948,420.19 and 429,267.54

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Solution

The fourth proportional to 687,237.86, 948,420.19 and 429,267.54 is: 592,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,237.86 : 948,420.19 = 429,267.54 : x
  2. Step 2: Convert to fraction form
    687,237.86/948,420.19 = 429,267.54/x
  3. Step 3: Cross multiply
    687,237.86x = 948,420.19 × 429,267.54
  4. Step 4: Simplify right side
    687,237.86x = 407,126,001,847.63
  5. Step 5: Solve for x
    x = 407,126,001,847.63/687,237.86
  6. Step 6: Final answer
    x = 592,409.16

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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.