Home / 4,128,052.30-6,192,078.45-1,287,795.40

Finding the Fourth Proportional to 4,128,052.30, 6,192,078.45 and 1,287,795.40

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Solution

The fourth proportional to 4,128,052.30, 6,192,078.45 and 1,287,795.40 is: 1,931,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128,052.30 : 6,192,078.45 = 1,287,795.40 : x
  2. Step 2: Convert to fraction form
    4,128,052.30/6,192,078.45 = 1,287,795.40/x
  3. Step 3: Cross multiply
    4,128,052.30x = 6,192,078.45 × 1,287,795.40
  4. Step 4: Simplify right side
    4,128,052.30x = 7,974,130,144,349.13
  5. Step 5: Solve for x
    x = 7,974,130,144,349.13/4,128,052.30
  6. Step 6: Final answer
    x = 1,931,693.10

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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.