Home / 717,835.64-990,656.67-395,545.34

Finding the Fourth Proportional to 717,835.64, 990,656.67 and 395,545.34

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Solution

The fourth proportional to 717,835.64, 990,656.67 and 395,545.34 is: 545,876.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,835.64 : 990,656.67 = 395,545.34 : x
  2. Step 2: Convert to fraction form
    717,835.64/990,656.67 = 395,545.34/x
  3. Step 3: Cross multiply
    717,835.64x = 990,656.67 × 395,545.34
  4. Step 4: Simplify right side
    717,835.64x = 391,849,624,405.13
  5. Step 5: Solve for x
    x = 391,849,624,405.13/717,835.64
  6. Step 6: Final answer
    x = 545,876.53

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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.