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Finding the Fourth Proportional to 698,357.60, 963,707.60 and 426,880.16

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Solution

The fourth proportional to 698,357.60, 963,707.60 and 426,880.16 is: 589,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,357.60 : 963,707.60 = 426,880.16 : x
  2. Step 2: Convert to fraction form
    698,357.60/963,707.60 = 426,880.16/x
  3. Step 3: Cross multiply
    698,357.60x = 963,707.60 × 426,880.16
  4. Step 4: Simplify right side
    698,357.60x = 411,387,654,481.22
  5. Step 5: Solve for x
    x = 411,387,654,481.22/698,357.60
  6. Step 6: Final answer
    x = 589,078.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.