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Finding the Fourth Proportional to 525,287,416.80, 787,931,125.20 and 404,355,064.80

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Solution

The fourth proportional to 525,287,416.80, 787,931,125.20 and 404,355,064.80 is: 606,532,597.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,287,416.80 : 787,931,125.20 = 404,355,064.80 : x
  2. Step 2: Convert to fraction form
    525,287,416.80/787,931,125.20 = 404,355,064.80/x
  3. Step 3: Cross multiply
    525,287,416.80x = 787,931,125.20 × 404,355,064.80
  4. Step 4: Simplify right side
    525,287,416.80x = 318,603,941,188,182,912
  5. Step 5: Solve for x
    x = 318,603,941,188,182,912/525,287,416.80
  6. Step 6: Final answer
    x = 606,532,597.20

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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.