Home / 1,187,346.40-1,779,962.51-429,018.73

Finding the Fourth Proportional to 1,187,346.40, 1,779,962.51 and 429,018.73

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Solution

The fourth proportional to 1,187,346.40, 1,779,962.51 and 429,018.73 is: 643,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,346.40 : 1,779,962.51 = 429,018.73 : x
  2. Step 2: Convert to fraction form
    1,187,346.40/1,779,962.51 = 429,018.73/x
  3. Step 3: Cross multiply
    1,187,346.40x = 1,779,962.51 × 429,018.73
  4. Step 4: Simplify right side
    1,187,346.40x = 763,637,252,110.45
  5. Step 5: Solve for x
    x = 763,637,252,110.45/1,187,346.40
  6. Step 6: Final answer
    x = 643,146.14

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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.