Home / 918,123.90-1,376,201.70-349,285.20

Finding the Fourth Proportional to 918,123.90, 1,376,201.70 and 349,285.20

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Solution

The fourth proportional to 918,123.90, 1,376,201.70 and 349,285.20 is: 523,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,123.90 : 1,376,201.70 = 349,285.20 : x
  2. Step 2: Convert to fraction form
    918,123.90/1,376,201.70 = 349,285.20/x
  3. Step 3: Cross multiply
    918,123.90x = 1,376,201.70 × 349,285.20
  4. Step 4: Simplify right side
    918,123.90x = 480,686,886,024.84
  5. Step 5: Solve for x
    x = 480,686,886,024.84/918,123.90
  6. Step 6: Final answer
    x = 523,553.40

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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.