Home / 1,230,302.40-1,845,280.80-388,939.20

Finding the Fourth Proportional to 1,230,302.40, 1,845,280.80 and 388,939.20

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Solution

The fourth proportional to 1,230,302.40, 1,845,280.80 and 388,939.20 is: 583,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,302.40 : 1,845,280.80 = 388,939.20 : x
  2. Step 2: Convert to fraction form
    1,230,302.40/1,845,280.80 = 388,939.20/x
  3. Step 3: Cross multiply
    1,230,302.40x = 1,845,280.80 × 388,939.20
  4. Step 4: Simplify right side
    1,230,302.40x = 717,702,038,127.36
  5. Step 5: Solve for x
    x = 717,702,038,127.36/1,230,302.40
  6. Step 6: Final answer
    x = 583,354.17

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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.