Home / 1,118,111.80-1,677,386.40-478,414.30

Finding the Fourth Proportional to 1,118,111.80, 1,677,386.40 and 478,414.30

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Solution

The fourth proportional to 1,118,111.80, 1,677,386.40 and 478,414.30 is: 717,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,111.80 : 1,677,386.40 = 478,414.30 : x
  2. Step 2: Convert to fraction form
    1,118,111.80/1,677,386.40 = 478,414.30/x
  3. Step 3: Cross multiply
    1,118,111.80x = 1,677,386.40 × 478,414.30
  4. Step 4: Simplify right side
    1,118,111.80x = 802,485,640,385.52
  5. Step 5: Solve for x
    x = 802,485,640,385.52/1,118,111.80
  6. Step 6: Final answer
    x = 717,715.03

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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.