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Finding the Fourth Proportional to 660,623.60, 990,935.40 and 587,140.40

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Solution

The fourth proportional to 660,623.60, 990,935.40 and 587,140.40 is: 880,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,623.60 : 990,935.40 = 587,140.40 : x
  2. Step 2: Convert to fraction form
    660,623.60/990,935.40 = 587,140.40/x
  3. Step 3: Cross multiply
    660,623.60x = 990,935.40 × 587,140.40
  4. Step 4: Simplify right side
    660,623.60x = 581,818,207,130.16
  5. Step 5: Solve for x
    x = 581,818,207,130.16/660,623.60
  6. Step 6: Final answer
    x = 880,710.60

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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.