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Finding the Fourth Proportional to 525,642,280.80, 788,463,421.20 and 525,642,280.80

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Solution

The fourth proportional to 525,642,280.80, 788,463,421.20 and 525,642,280.80 is: 788,463,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,642,280.80 : 788,463,421.20 = 525,642,280.80 : x
  2. Step 2: Convert to fraction form
    525,642,280.80/788,463,421.20 = 525,642,280.80/x
  3. Step 3: Cross multiply
    525,642,280.80x = 788,463,421.20 × 525,642,280.80
  4. Step 4: Simplify right side
    525,642,280.80x = 414,449,711,046,939,136
  5. Step 5: Solve for x
    x = 414,449,711,046,939,136/525,642,280.80
  6. Step 6: Final answer
    x = 788,463,421.20

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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.