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Finding the Fourth Proportional to 553,639,391.60, 829,343,061.30 and 345,739,672.40

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Solution

The fourth proportional to 553,639,391.60, 829,343,061.30 and 345,739,672.40 is: 517,912,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,639,391.60 : 829,343,061.30 = 345,739,672.40 : x
  2. Step 2: Convert to fraction form
    553,639,391.60/829,343,061.30 = 345,739,672.40/x
  3. Step 3: Cross multiply
    553,639,391.60x = 829,343,061.30 × 345,739,672.40
  4. Step 4: Simplify right side
    553,639,391.60x = 286,736,798,321,075,072
  5. Step 5: Solve for x
    x = 286,736,798,321,075,072/553,639,391.60
  6. Step 6: Final answer
    x = 517,912,566.68

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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.