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Finding the Fourth Proportional to 556,005.16, 767,278.78 and 314,279.26

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Solution

The fourth proportional to 556,005.16, 767,278.78 and 314,279.26 is: 433,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,005.16 : 767,278.78 = 314,279.26 : x
  2. Step 2: Convert to fraction form
    556,005.16/767,278.78 = 314,279.26/x
  3. Step 3: Cross multiply
    556,005.16x = 767,278.78 × 314,279.26
  4. Step 4: Simplify right side
    556,005.16x = 241,139,807,192.10
  5. Step 5: Solve for x
    x = 241,139,807,192.10/556,005.16
  6. Step 6: Final answer
    x = 433,700.66

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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.