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Finding the Fourth Proportional to 1,248,705, 1,872,299.02 and 489,637.05

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Solution

The fourth proportional to 1,248,705, 1,872,299.02 and 489,637.05 is: 734,158.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,705 : 1,872,299.02 = 489,637.05 : x
  2. Step 2: Convert to fraction form
    1,248,705/1,872,299.02 = 489,637.05/x
  3. Step 3: Cross multiply
    1,248,705x = 1,872,299.02 × 489,637.05
  4. Step 4: Simplify right side
    1,248,705x = 916,746,968,870.69
  5. Step 5: Solve for x
    x = 916,746,968,870.69/1,248,705
  6. Step 6: Final answer
    x = 734,158.16

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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.