Home / 1,357,428.78-1,873,577.93-776,988.45

Finding the Fourth Proportional to 1,357,428.78, 1,873,577.93 and 776,988.45

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Solution

The fourth proportional to 1,357,428.78, 1,873,577.93 and 776,988.45 is: 1,072,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357,428.78 : 1,873,577.93 = 776,988.45 : x
  2. Step 2: Convert to fraction form
    1,357,428.78/1,873,577.93 = 776,988.45/x
  3. Step 3: Cross multiply
    1,357,428.78x = 1,873,577.93 × 776,988.45
  4. Step 4: Simplify right side
    1,357,428.78x = 1,455,748,407,899.97
  5. Step 5: Solve for x
    x = 1,455,748,407,899.97/1,357,428.78
  6. Step 6: Final answer
    x = 1,072,430.78

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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.