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Finding the Fourth Proportional to 897,435.16, 1,238,483.88 and 489,543.88

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Solution

The fourth proportional to 897,435.16, 1,238,483.88 and 489,543.88 is: 675,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,435.16 : 1,238,483.88 = 489,543.88 : x
  2. Step 2: Convert to fraction form
    897,435.16/1,238,483.88 = 489,543.88/x
  3. Step 3: Cross multiply
    897,435.16x = 1,238,483.88 × 489,543.88
  4. Step 4: Simplify right side
    897,435.16x = 606,292,203,932.65
  5. Step 5: Solve for x
    x = 606,292,203,932.65/897,435.16
  6. Step 6: Final answer
    x = 675,583.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.