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Finding the Fourth Proportional to 579,307,099.40, 869,968,418.70 and 307,209,307.40

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Solution

The fourth proportional to 579,307,099.40, 869,968,418.70 and 307,209,307.40 is: 461,348,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,307,099.40 : 869,968,418.70 = 307,209,307.40 : x
  2. Step 2: Convert to fraction form
    579,307,099.40/869,968,418.70 = 307,209,307.40/x
  3. Step 3: Cross multiply
    579,307,099.40x = 869,968,418.70 × 307,209,307.40
  4. Step 4: Simplify right side
    579,307,099.40x = 267,262,395,368,700,192
  5. Step 5: Solve for x
    x = 267,262,395,368,700,192/579,307,099.40
  6. Step 6: Final answer
    x = 461,348,386.11

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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.