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Finding the Fourth Proportional to 553,792.20, 830,688.30 and 548,543.40

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Solution

The fourth proportional to 553,792.20, 830,688.30 and 548,543.40 is: 822,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,792.20 : 830,688.30 = 548,543.40 : x
  2. Step 2: Convert to fraction form
    553,792.20/830,688.30 = 548,543.40/x
  3. Step 3: Cross multiply
    553,792.20x = 830,688.30 × 548,543.40
  4. Step 4: Simplify right side
    553,792.20x = 455,668,584,422.22
  5. Step 5: Solve for x
    x = 455,668,584,422.22/553,792.20
  6. Step 6: Final answer
    x = 822,815.10

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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.