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Finding the Fourth Proportional to 561,707.58, 775,156.68 and 307,058.70

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Solution

The fourth proportional to 561,707.58, 775,156.68 and 307,058.70 is: 423,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,707.58 : 775,156.68 = 307,058.70 : x
  2. Step 2: Convert to fraction form
    561,707.58/775,156.68 = 307,058.70/x
  3. Step 3: Cross multiply
    561,707.58x = 775,156.68 × 307,058.70
  4. Step 4: Simplify right side
    561,707.58x = 238,018,602,457.12
  5. Step 5: Solve for x
    x = 238,018,602,457.12/561,707.58
  6. Step 6: Final answer
    x = 423,741.13

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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.