Home / 809,816,602.28-1,117,547,988.90-438,539,273.96

Finding the Fourth Proportional to 809,816,602.28, 1,117,547,988.90 and 438,539,273.96

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Solution

The fourth proportional to 809,816,602.28, 1,117,547,988.90 and 438,539,273.96 is: 605,184,781.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,602.28 : 1,117,547,988.90 = 438,539,273.96 : x
  2. Step 2: Convert to fraction form
    809,816,602.28/1,117,547,988.90 = 438,539,273.96/x
  3. Step 3: Cross multiply
    809,816,602.28x = 1,117,547,988.90 × 438,539,273.96
  4. Step 4: Simplify right side
    809,816,602.28x = 490,088,683,667,664,128
  5. Step 5: Solve for x
    x = 490,088,683,667,664,128/809,816,602.28
  6. Step 6: Final answer
    x = 605,184,781.70

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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.