Home / 1,277,346,066.80-1,916,019,100.20-869,199,378.80

Finding the Fourth Proportional to 1,277,346,066.80, 1,916,019,100.20 and 869,199,378.80

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Solution

The fourth proportional to 1,277,346,066.80, 1,916,019,100.20 and 869,199,378.80 is: 1,303,799,068.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,346,066.80 : 1,916,019,100.20 = 869,199,378.80 : x
  2. Step 2: Convert to fraction form
    1,277,346,066.80/1,916,019,100.20 = 869,199,378.80/x
  3. Step 3: Cross multiply
    1,277,346,066.80x = 1,916,019,100.20 × 869,199,378.80
  4. Step 4: Simplify right side
    1,277,346,066.80x = 1,665,402,611,662,774,784
  5. Step 5: Solve for x
    x = 1,665,402,611,662,774,784/1,277,346,066.80
  6. Step 6: Final answer
    x = 1,303,799,068.20

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Double scale
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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.