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Finding the Fourth Proportional to 528,244.80, 728,973.54 and 286,526.76

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Solution

The fourth proportional to 528,244.80, 728,973.54 and 286,526.76 is: 395,404.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,244.80 : 728,973.54 = 286,526.76 : x
  2. Step 2: Convert to fraction form
    528,244.80/728,973.54 = 286,526.76/x
  3. Step 3: Cross multiply
    528,244.80x = 728,973.54 × 286,526.76
  4. Step 4: Simplify right side
    528,244.80x = 208,870,426,541.93
  5. Step 5: Solve for x
    x = 208,870,426,541.93/528,244.80
  6. Step 6: Final answer
    x = 395,404.61

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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.