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Finding the Fourth Proportional to 556,081.19, 767,386.31 and 311,062.77

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Solution

The fourth proportional to 556,081.19, 767,386.31 and 311,062.77 is: 429,263.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,081.19 : 767,386.31 = 311,062.77 : x
  2. Step 2: Convert to fraction form
    556,081.19/767,386.31 = 311,062.77/x
  3. Step 3: Cross multiply
    556,081.19x = 767,386.31 × 311,062.77
  4. Step 4: Simplify right side
    556,081.19x = 238,705,309,693.37
  5. Step 5: Solve for x
    x = 238,705,309,693.37/556,081.19
  6. Step 6: Final answer
    x = 429,263.41

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1.5x scale

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.