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Finding the Fourth Proportional to 577,368,374.40, 866,052,561.60 and 393,702,364.80

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Solution

The fourth proportional to 577,368,374.40, 866,052,561.60 and 393,702,364.80 is: 590,553,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,368,374.40 : 866,052,561.60 = 393,702,364.80 : x
  2. Step 2: Convert to fraction form
    577,368,374.40/866,052,561.60 = 393,702,364.80/x
  3. Step 3: Cross multiply
    577,368,374.40x = 866,052,561.60 × 393,702,364.80
  4. Step 4: Simplify right side
    577,368,374.40x = 340,966,941,543,017,664
  5. Step 5: Solve for x
    x = 340,966,941,543,017,664/577,368,374.40
  6. Step 6: Final answer
    x = 590,553,547.20

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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.