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Finding the Fourth Proportional to 897,603.12, 1,238,689.53 and 489,702.04

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Solution

The fourth proportional to 897,603.12, 1,238,689.53 and 489,702.04 is: 675,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,603.12 : 1,238,689.53 = 489,702.04 : x
  2. Step 2: Convert to fraction form
    897,603.12/1,238,689.53 = 489,702.04/x
  3. Step 3: Cross multiply
    897,603.12x = 1,238,689.53 × 489,702.04
  4. Step 4: Simplify right side
    897,603.12x = 606,588,786,670.92
  5. Step 5: Solve for x
    x = 606,588,786,670.92/897,603.12
  6. Step 6: Final answer
    x = 675,787.30

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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.