Home / 989,311,206.40-1,483,966,809.60-343,078,950.40

Finding the Fourth Proportional to 989,311,206.40, 1,483,966,809.60 and 343,078,950.40

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Solution

The fourth proportional to 989,311,206.40, 1,483,966,809.60 and 343,078,950.40 is: 514,618,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,311,206.40 : 1,483,966,809.60 = 343,078,950.40 : x
  2. Step 2: Convert to fraction form
    989,311,206.40/1,483,966,809.60 = 343,078,950.40/x
  3. Step 3: Cross multiply
    989,311,206.40x = 1,483,966,809.60 × 343,078,950.40
  4. Step 4: Simplify right side
    989,311,206.40x = 509,117,775,466,004,544
  5. Step 5: Solve for x
    x = 509,117,775,466,004,544/989,311,206.40
  6. Step 6: Final answer
    x = 514,618,425.60

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Double scale
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Similar ratio
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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.