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Finding the Fourth Proportional to 556,078.37, 767,389.14 and 301,430.16

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Solution

The fourth proportional to 556,078.37, 767,389.14 and 301,430.16 is: 415,974.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,078.37 : 767,389.14 = 301,430.16 : x
  2. Step 2: Convert to fraction form
    556,078.37/767,389.14 = 301,430.16/x
  3. Step 3: Cross multiply
    556,078.37x = 767,389.14 × 301,430.16
  4. Step 4: Simplify right side
    556,078.37x = 231,314,231,252.46
  5. Step 5: Solve for x
    x = 231,314,231,252.46/556,078.37
  6. Step 6: Final answer
    x = 415,974.16

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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.