Home / 515,075.23-710,801.58-288,720.73

Finding the Fourth Proportional to 515,075.23, 710,801.58 and 288,720.73

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Solution

The fourth proportional to 515,075.23, 710,801.58 and 288,720.73 is: 398,433.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,075.23 : 710,801.58 = 288,720.73 : x
  2. Step 2: Convert to fraction form
    515,075.23/710,801.58 = 288,720.73/x
  3. Step 3: Cross multiply
    515,075.23x = 710,801.58 × 288,720.73
  4. Step 4: Simplify right side
    515,075.23x = 205,223,151,062.75
  5. Step 5: Solve for x
    x = 205,223,151,062.75/515,075.23
  6. Step 6: Final answer
    x = 398,433.35

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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.