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Finding the Fourth Proportional to 489,984.90, 734,588.55 and 268,368.90

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Solution

The fourth proportional to 489,984.90, 734,588.55 and 268,368.90 is: 402,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,984.90 : 734,588.55 = 268,368.90 : x
  2. Step 2: Convert to fraction form
    489,984.90/734,588.55 = 268,368.90/x
  3. Step 3: Cross multiply
    489,984.90x = 734,588.55 × 268,368.90
  4. Step 4: Simplify right side
    489,984.90x = 197,140,721,116.10
  5. Step 5: Solve for x
    x = 197,140,721,116.10/489,984.90
  6. Step 6: Final answer
    x = 402,340.40

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1.5x scale

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.