Home / 1,918,810.61-2,877,603.54-781,570.61

Finding the Fourth Proportional to 1,918,810.61, 2,877,603.54 and 781,570.61

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Solution

The fourth proportional to 1,918,810.61, 2,877,603.54 and 781,570.61 is: 1,172,106.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,810.61 : 2,877,603.54 = 781,570.61 : x
  2. Step 2: Convert to fraction form
    1,918,810.61/2,877,603.54 = 781,570.61/x
  3. Step 3: Cross multiply
    1,918,810.61x = 2,877,603.54 × 781,570.61
  4. Step 4: Simplify right side
    1,918,810.61x = 2,249,050,339,707.94
  5. Step 5: Solve for x
    x = 2,249,050,339,707.94/1,918,810.61
  6. Step 6: Final answer
    x = 1,172,106.48

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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.