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Finding the Fourth Proportional to 525,869.80, 788,804.70 and 315,917.80

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Solution

The fourth proportional to 525,869.80, 788,804.70 and 315,917.80 is: 473,876.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,869.80 : 788,804.70 = 315,917.80 : x
  2. Step 2: Convert to fraction form
    525,869.80/788,804.70 = 315,917.80/x
  3. Step 3: Cross multiply
    525,869.80x = 788,804.70 × 315,917.80
  4. Step 4: Simplify right side
    525,869.80x = 249,197,445,453.66
  5. Step 5: Solve for x
    x = 249,197,445,453.66/525,869.80
  6. Step 6: Final answer
    x = 473,876.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.