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Finding the Fourth Proportional to 626,785.79, 864,955.47 and 340,316.87

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Solution

The fourth proportional to 626,785.79, 864,955.47 and 340,316.87 is: 469,632.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,785.79 : 864,955.47 = 340,316.87 : x
  2. Step 2: Convert to fraction form
    626,785.79/864,955.47 = 340,316.87/x
  3. Step 3: Cross multiply
    626,785.79x = 864,955.47 × 340,316.87
  4. Step 4: Simplify right side
    626,785.79x = 294,358,933,915.00
  5. Step 5: Solve for x
    x = 294,358,933,915.00/626,785.79
  6. Step 6: Final answer
    x = 469,632.43

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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.