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Finding the Fourth Proportional to 1,246,368.78, 1,869,868.58 and 347,810.40

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Solution

The fourth proportional to 1,246,368.78, 1,869,868.58 and 347,810.40 is: 521,803.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,368.78 : 1,869,868.58 = 347,810.40 : x
  2. Step 2: Convert to fraction form
    1,246,368.78/1,869,868.58 = 347,810.40/x
  3. Step 3: Cross multiply
    1,246,368.78x = 1,869,868.58 × 347,810.40
  4. Step 4: Simplify right side
    1,246,368.78x = 650,359,737,018.18
  5. Step 5: Solve for x
    x = 650,359,737,018.18/1,246,368.78
  6. Step 6: Final answer
    x = 521,803.62

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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.