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Finding the Fourth Proportional to 660,109.20, 992,277.90 and 613,307.40

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Solution

The fourth proportional to 660,109.20, 992,277.90 and 613,307.40 is: 921,925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,109.20 : 992,277.90 = 613,307.40 : x
  2. Step 2: Convert to fraction form
    660,109.20/992,277.90 = 613,307.40/x
  3. Step 3: Cross multiply
    660,109.20x = 992,277.90 × 613,307.40
  4. Step 4: Simplify right side
    660,109.20x = 608,571,378,926.46
  5. Step 5: Solve for x
    x = 608,571,378,926.46/660,109.20
  6. Step 6: Final answer
    x = 921,925.31

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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.