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Finding the Fourth Proportional to 553,613.60, 830,420.40 and 453,886.40

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Solution

The fourth proportional to 553,613.60, 830,420.40 and 453,886.40 is: 680,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,613.60 : 830,420.40 = 453,886.40 : x
  2. Step 2: Convert to fraction form
    553,613.60/830,420.40 = 453,886.40/x
  3. Step 3: Cross multiply
    553,613.60x = 830,420.40 × 453,886.40
  4. Step 4: Simplify right side
    553,613.60x = 376,916,525,842.56
  5. Step 5: Solve for x
    x = 376,916,525,842.56/553,613.60
  6. Step 6: Final answer
    x = 680,829.60

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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.