Home / 1,487,123.48-2,230,686.47-407,647.78

Finding the Fourth Proportional to 1,487,123.48, 2,230,686.47 and 407,647.78

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Solution

The fourth proportional to 1,487,123.48, 2,230,686.47 and 407,647.78 is: 611,472.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487,123.48 : 2,230,686.47 = 407,647.78 : x
  2. Step 2: Convert to fraction form
    1,487,123.48/2,230,686.47 = 407,647.78/x
  3. Step 3: Cross multiply
    1,487,123.48x = 2,230,686.47 × 407,647.78
  4. Step 4: Simplify right side
    1,487,123.48x = 909,334,382,813.94
  5. Step 5: Solve for x
    x = 909,334,382,813.94/1,487,123.48
  6. Step 6: Final answer
    x = 611,472.01

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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.