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Finding the Fourth Proportional to 719,684.40, 992,805.75 and 429,091.02

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Solution

The fourth proportional to 719,684.40, 992,805.75 and 429,091.02 is: 591,931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,684.40 : 992,805.75 = 429,091.02 : x
  2. Step 2: Convert to fraction form
    719,684.40/992,805.75 = 429,091.02/x
  3. Step 3: Cross multiply
    719,684.40x = 992,805.75 × 429,091.02
  4. Step 4: Simplify right side
    719,684.40x = 426,004,031,929.37
  5. Step 5: Solve for x
    x = 426,004,031,929.37/719,684.40
  6. Step 6: Final answer
    x = 591,931.73

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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.