Home / 665,221.86-918,005.80-359,298.08

Finding the Fourth Proportional to 665,221.86, 918,005.80 and 359,298.08

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Solution

The fourth proportional to 665,221.86, 918,005.80 and 359,298.08 is: 495,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,221.86 : 918,005.80 = 359,298.08 : x
  2. Step 2: Convert to fraction form
    665,221.86/918,005.80 = 359,298.08/x
  3. Step 3: Cross multiply
    665,221.86x = 918,005.80 × 359,298.08
  4. Step 4: Simplify right side
    665,221.86x = 329,837,721,368.86
  5. Step 5: Solve for x
    x = 329,837,721,368.86/665,221.86
  6. Step 6: Final answer
    x = 495,831.15

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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.