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Finding the Fourth Proportional to 553,689.20, 830,015.40 and 433,679.60

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Solution

The fourth proportional to 553,689.20, 830,015.40 and 433,679.60 is: 650,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,689.20 : 830,015.40 = 433,679.60 : x
  2. Step 2: Convert to fraction form
    553,689.20/830,015.40 = 433,679.60/x
  3. Step 3: Cross multiply
    553,689.20x = 830,015.40 × 433,679.60
  4. Step 4: Simplify right side
    553,689.20x = 359,960,746,665.84
  5. Step 5: Solve for x
    x = 359,960,746,665.84/553,689.20
  6. Step 6: Final answer
    x = 650,113.36

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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.