Home / 1,069,130.95-1,475,400.63-639,411.07

Finding the Fourth Proportional to 1,069,130.95, 1,475,400.63 and 639,411.07

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Solution

The fourth proportional to 1,069,130.95, 1,475,400.63 and 639,411.07 is: 882,387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,130.95 : 1,475,400.63 = 639,411.07 : x
  2. Step 2: Convert to fraction form
    1,069,130.95/1,475,400.63 = 639,411.07/x
  3. Step 3: Cross multiply
    1,069,130.95x = 1,475,400.63 × 639,411.07
  4. Step 4: Simplify right side
    1,069,130.95x = 943,387,495,506.97
  5. Step 5: Solve for x
    x = 943,387,495,506.97/1,069,130.95
  6. Step 6: Final answer
    x = 882,387.23

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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.