Home / 615,723.10-921,835.05-545,739.10

Finding the Fourth Proportional to 615,723.10, 921,835.05 and 545,739.10

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Solution

The fourth proportional to 615,723.10, 921,835.05 and 545,739.10 is: 817,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,723.10 : 921,835.05 = 545,739.10 : x
  2. Step 2: Convert to fraction form
    615,723.10/921,835.05 = 545,739.10/x
  3. Step 3: Cross multiply
    615,723.10x = 921,835.05 × 545,739.10
  4. Step 4: Simplify right side
    615,723.10x = 503,081,430,535.46
  5. Step 5: Solve for x
    x = 503,081,430,535.46/615,723.10
  6. Step 6: Final answer
    x = 817,057.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.