Home / 665,822.42-918,841.65-359,904.72

Finding the Fourth Proportional to 665,822.42, 918,841.65 and 359,904.72

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Solution

The fourth proportional to 665,822.42, 918,841.65 and 359,904.72 is: 496,672.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,822.42 : 918,841.65 = 359,904.72 : x
  2. Step 2: Convert to fraction form
    665,822.42/918,841.65 = 359,904.72/x
  3. Step 3: Cross multiply
    665,822.42x = 918,841.65 × 359,904.72
  4. Step 4: Simplify right side
    665,822.42x = 330,695,446,767.59
  5. Step 5: Solve for x
    x = 330,695,446,767.59/665,822.42
  6. Step 6: Final answer
    x = 496,672.14

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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.