Home / 809,816,579.28-1,117,547,957.16-438,539,250.96

Finding the Fourth Proportional to 809,816,579.28, 1,117,547,957.16 and 438,539,250.96

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Solution

The fourth proportional to 809,816,579.28, 1,117,547,957.16 and 438,539,250.96 is: 605,184,749.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,579.28 : 1,117,547,957.16 = 438,539,250.96 : x
  2. Step 2: Convert to fraction form
    809,816,579.28/1,117,547,957.16 = 438,539,250.96/x
  3. Step 3: Cross multiply
    809,816,579.28x = 1,117,547,957.16 × 438,539,250.96
  4. Step 4: Simplify right side
    809,816,579.28x = 490,088,644,044,824,576
  5. Step 5: Solve for x
    x = 490,088,644,044,824,576/809,816,579.28
  6. Step 6: Final answer
    x = 605,184,749.96

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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.