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Finding the Fourth Proportional to 553,661.10, 831,475.80 and 404,070.30

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Solution

The fourth proportional to 553,661.10, 831,475.80 and 404,070.30 is: 606,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,661.10 : 831,475.80 = 404,070.30 : x
  2. Step 2: Convert to fraction form
    553,661.10/831,475.80 = 404,070.30/x
  3. Step 3: Cross multiply
    553,661.10x = 831,475.80 × 404,070.30
  4. Step 4: Simplify right side
    553,661.10x = 335,974,675,948.74
  5. Step 5: Solve for x
    x = 335,974,675,948.74/553,661.10
  6. Step 6: Final answer
    x = 606,823.70

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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.