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Finding the Fourth Proportional to 507,713.94, 761,570.91 and 258,570.90

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Solution

The fourth proportional to 507,713.94, 761,570.91 and 258,570.90 is: 387,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,713.94 : 761,570.91 = 258,570.90 : x
  2. Step 2: Convert to fraction form
    507,713.94/761,570.91 = 258,570.90/x
  3. Step 3: Cross multiply
    507,713.94x = 761,570.91 × 258,570.90
  4. Step 4: Simplify right side
    507,713.94x = 196,920,075,612.52
  5. Step 5: Solve for x
    x = 196,920,075,612.52/507,713.94
  6. Step 6: Final answer
    x = 387,856.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.