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Finding the Fourth Proportional to 884,364.81, 1,220,274.02 and 497,128.70

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Solution

The fourth proportional to 884,364.81, 1,220,274.02 and 497,128.70 is: 685,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,364.81 : 1,220,274.02 = 497,128.70 : x
  2. Step 2: Convert to fraction form
    884,364.81/1,220,274.02 = 497,128.70/x
  3. Step 3: Cross multiply
    884,364.81x = 1,220,274.02 × 497,128.70
  4. Step 4: Simplify right side
    884,364.81x = 606,633,228,619.36
  5. Step 5: Solve for x
    x = 606,633,228,619.36/884,364.81
  6. Step 6: Final answer
    x = 685,953.60

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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.