Home / 809,816,599.53-1,117,547,985.11-438,539,271.21

Finding the Fourth Proportional to 809,816,599.53, 1,117,547,985.11 and 438,539,271.21

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Solution

The fourth proportional to 809,816,599.53, 1,117,547,985.11 and 438,539,271.21 is: 605,184,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,599.53 : 1,117,547,985.11 = 438,539,271.21 : x
  2. Step 2: Convert to fraction form
    809,816,599.53/1,117,547,985.11 = 438,539,271.21/x
  3. Step 3: Cross multiply
    809,816,599.53x = 1,117,547,985.11 × 438,539,271.21
  4. Step 4: Simplify right side
    809,816,599.53x = 490,088,678,930,150,592
  5. Step 5: Solve for x
    x = 490,088,678,930,150,592/809,816,599.53
  6. Step 6: Final answer
    x = 605,184,777.90

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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.