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Finding the Fourth Proportional to 555,038.18, 765,952.68 and 300,389.36

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Solution

The fourth proportional to 555,038.18, 765,952.68 and 300,389.36 is: 414,537.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,038.18 : 765,952.68 = 300,389.36 : x
  2. Step 2: Convert to fraction form
    555,038.18/765,952.68 = 300,389.36/x
  3. Step 3: Cross multiply
    555,038.18x = 765,952.68 × 300,389.36
  4. Step 4: Simplify right side
    555,038.18x = 230,084,035,335.49
  5. Step 5: Solve for x
    x = 230,084,035,335.49/555,038.18
  6. Step 6: Final answer
    x = 414,537.31

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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.