Home / 809,816,598.78-1,117,547,984.07-438,539,270.46

Finding the Fourth Proportional to 809,816,598.78, 1,117,547,984.07 and 438,539,270.46

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Solution

The fourth proportional to 809,816,598.78, 1,117,547,984.07 and 438,539,270.46 is: 605,184,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,816,598.78 : 1,117,547,984.07 = 438,539,270.46 : x
  2. Step 2: Convert to fraction form
    809,816,598.78/1,117,547,984.07 = 438,539,270.46/x
  3. Step 3: Cross multiply
    809,816,598.78x = 1,117,547,984.07 × 438,539,270.46
  4. Step 4: Simplify right side
    809,816,598.78x = 490,088,677,638,101,440
  5. Step 5: Solve for x
    x = 490,088,677,638,101,440/809,816,598.78
  6. Step 6: Final answer
    x = 605,184,776.87

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Double scale
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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.