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Finding the Fourth Proportional to 563,792.76, 778,033.44 and 309,148.20

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Solution

The fourth proportional to 563,792.76, 778,033.44 and 309,148.20 is: 426,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,792.76 : 778,033.44 = 309,148.20 : x
  2. Step 2: Convert to fraction form
    563,792.76/778,033.44 = 309,148.20/x
  3. Step 3: Cross multiply
    563,792.76x = 778,033.44 × 309,148.20
  4. Step 4: Simplify right side
    563,792.76x = 240,527,637,515.81
  5. Step 5: Solve for x
    x = 240,527,637,515.81/563,792.76
  6. Step 6: Final answer
    x = 426,624.20

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Half scale
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Double scale
Find fourth proportional to 563,793.76, 778,034.82 and 309,149.20
Similar ratio
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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.