Home / 772,800.10-1,159,200.15-489,364.90

Finding the Fourth Proportional to 772,800.10, 1,159,200.15 and 489,364.90

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Solution

The fourth proportional to 772,800.10, 1,159,200.15 and 489,364.90 is: 734,047.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,800.10 : 1,159,200.15 = 489,364.90 : x
  2. Step 2: Convert to fraction form
    772,800.10/1,159,200.15 = 489,364.90/x
  3. Step 3: Cross multiply
    772,800.10x = 1,159,200.15 × 489,364.90
  4. Step 4: Simplify right side
    772,800.10x = 567,271,865,484.74
  5. Step 5: Solve for x
    x = 567,271,865,484.74/772,800.10
  6. Step 6: Final answer
    x = 734,047.35

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Double scale
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Similar ratio
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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.