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Finding the Fourth Proportional to 528,543.70, 729,390.76 and 286,826.26

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Solution

The fourth proportional to 528,543.70, 729,390.76 and 286,826.26 is: 395,820.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,543.70 : 729,390.76 = 286,826.26 : x
  2. Step 2: Convert to fraction form
    528,543.70/729,390.76 = 286,826.26/x
  3. Step 3: Cross multiply
    528,543.70x = 729,390.76 × 286,826.26
  4. Step 4: Simplify right side
    528,543.70x = 209,208,423,769.36
  5. Step 5: Solve for x
    x = 209,208,423,769.36/528,543.70
  6. Step 6: Final answer
    x = 395,820.49

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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.