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Finding the Fourth Proportional to 528,567.68, 729,428.74 and 286,852.34

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Solution

The fourth proportional to 528,567.68, 729,428.74 and 286,852.34 is: 395,859.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,567.68 : 729,428.74 = 286,852.34 : x
  2. Step 2: Convert to fraction form
    528,567.68/729,428.74 = 286,852.34/x
  3. Step 3: Cross multiply
    528,567.68x = 729,428.74 × 286,852.34
  4. Step 4: Simplify right side
    528,567.68x = 209,238,340,932.25
  5. Step 5: Solve for x
    x = 209,238,340,932.25/528,567.68
  6. Step 6: Final answer
    x = 395,859.13

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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.