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Finding the Fourth Proportional to 404,916.60, 607,374.90 and 286,721.40

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Solution

The fourth proportional to 404,916.60, 607,374.90 and 286,721.40 is: 430,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,916.60 : 607,374.90 = 286,721.40 : x
  2. Step 2: Convert to fraction form
    404,916.60/607,374.90 = 286,721.40/x
  3. Step 3: Cross multiply
    404,916.60x = 607,374.90 × 286,721.40
  4. Step 4: Simplify right side
    404,916.60x = 174,147,381,652.86
  5. Step 5: Solve for x
    x = 174,147,381,652.86/404,916.60
  6. Step 6: Final answer
    x = 430,082.10

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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.