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Finding the Fourth Proportional to 889,640.64, 1,227,792 and 507,724.80

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Solution

The fourth proportional to 889,640.64, 1,227,792 and 507,724.80 is: 700,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,640.64 : 1,227,792 = 507,724.80 : x
  2. Step 2: Convert to fraction form
    889,640.64/1,227,792 = 507,724.80/x
  3. Step 3: Cross multiply
    889,640.64x = 1,227,792 × 507,724.80
  4. Step 4: Simplify right side
    889,640.64x = 623,380,447,641.60
  5. Step 5: Solve for x
    x = 623,380,447,641.60/889,640.64
  6. Step 6: Final answer
    x = 700,710.40

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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.