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Finding the Fourth Proportional to 525,061.40, 787,073.70 and 258,603.80

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Solution

The fourth proportional to 525,061.40, 787,073.70 and 258,603.80 is: 387,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,061.40 : 787,073.70 = 258,603.80 : x
  2. Step 2: Convert to fraction form
    525,061.40/787,073.70 = 258,603.80/x
  3. Step 3: Cross multiply
    525,061.40x = 787,073.70 × 258,603.80
  4. Step 4: Simplify right side
    525,061.40x = 203,540,249,700.06
  5. Step 5: Solve for x
    x = 203,540,249,700.06/525,061.40
  6. Step 6: Final answer
    x = 387,650.38

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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.