Home / 515,957.07-712,038.57-286,518.20

Finding the Fourth Proportional to 515,957.07, 712,038.57 and 286,518.20

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Solution

The fourth proportional to 515,957.07, 712,038.57 and 286,518.20 is: 395,405.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,957.07 : 712,038.57 = 286,518.20 : x
  2. Step 2: Convert to fraction form
    515,957.07/712,038.57 = 286,518.20/x
  3. Step 3: Cross multiply
    515,957.07x = 712,038.57 × 286,518.20
  4. Step 4: Simplify right side
    515,957.07x = 204,012,007,034.25
  5. Step 5: Solve for x
    x = 204,012,007,034.25/515,957.07
  6. Step 6: Final answer
    x = 395,405.00

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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.