Home / 918,572.48-1,377,889.80-319,538.81

Finding the Fourth Proportional to 918,572.48, 1,377,889.80 and 319,538.81

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Solution

The fourth proportional to 918,572.48, 1,377,889.80 and 319,538.81 is: 479,319.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,572.48 : 1,377,889.80 = 319,538.81 : x
  2. Step 2: Convert to fraction form
    918,572.48/1,377,889.80 = 319,538.81/x
  3. Step 3: Cross multiply
    918,572.48x = 1,377,889.80 × 319,538.81
  4. Step 4: Simplify right side
    918,572.48x = 440,289,258,516.00
  5. Step 5: Solve for x
    x = 440,289,258,516.00/918,572.48
  6. Step 6: Final answer
    x = 479,319.02

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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.