Home / 1,248,689.41-1,872,275.63-489,621.45

Finding the Fourth Proportional to 1,248,689.41, 1,872,275.63 and 489,621.45

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Solution

The fourth proportional to 1,248,689.41, 1,872,275.63 and 489,621.45 is: 734,134.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,689.41 : 1,872,275.63 = 489,621.45 : x
  2. Step 2: Convert to fraction form
    1,248,689.41/1,872,275.63 = 489,621.45/x
  3. Step 3: Cross multiply
    1,248,689.41x = 1,872,275.63 × 489,621.45
  4. Step 4: Simplify right side
    1,248,689.41x = 916,706,316,087.31
  5. Step 5: Solve for x
    x = 916,706,316,087.31/1,248,689.41
  6. Step 6: Final answer
    x = 734,134.77

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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.