Home / 1,272,478.51-1,908,667.95-431,030.26

Finding the Fourth Proportional to 1,272,478.51, 1,908,667.95 and 431,030.26

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Solution

The fourth proportional to 1,272,478.51, 1,908,667.95 and 431,030.26 is: 646,528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,478.51 : 1,908,667.95 = 431,030.26 : x
  2. Step 2: Convert to fraction form
    1,272,478.51/1,908,667.95 = 431,030.26/x
  3. Step 3: Cross multiply
    1,272,478.51x = 1,908,667.95 × 431,030.26
  4. Step 4: Simplify right side
    1,272,478.51x = 822,693,642,742.17
  5. Step 5: Solve for x
    x = 822,693,642,742.17/1,272,478.51
  6. Step 6: Final answer
    x = 646,528.52

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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.