Home / 631,178.57-870,762.18-385,977.60

Finding the Fourth Proportional to 631,178.57, 870,762.18 and 385,977.60

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Solution

The fourth proportional to 631,178.57, 870,762.18 and 385,977.60 is: 532,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,178.57 : 870,762.18 = 385,977.60 : x
  2. Step 2: Convert to fraction form
    631,178.57/870,762.18 = 385,977.60/x
  3. Step 3: Cross multiply
    631,178.57x = 870,762.18 × 385,977.60
  4. Step 4: Simplify right side
    631,178.57x = 336,094,696,407.17
  5. Step 5: Solve for x
    x = 336,094,696,407.17/631,178.57
  6. Step 6: Final answer
    x = 532,487.50

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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.