Home / 778,967,981.10-1,168,670,416.16-312,956,643.81

Finding the Fourth Proportional to 778,967,981.10, 1,168,670,416.16 and 312,956,643.81

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Solution

The fourth proportional to 778,967,981.10, 1,168,670,416.16 and 312,956,643.81 is: 469,522,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,967,981.10 : 1,168,670,416.16 = 312,956,643.81 : x
  2. Step 2: Convert to fraction form
    778,967,981.10/1,168,670,416.16 = 312,956,643.81/x
  3. Step 3: Cross multiply
    778,967,981.10x = 1,168,670,416.16 × 312,956,643.81
  4. Step 4: Simplify right side
    778,967,981.10x = 365,743,171,159,904,768
  5. Step 5: Solve for x
    x = 365,743,171,159,904,768/778,967,981.10
  6. Step 6: Final answer
    x = 469,522,727.55

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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.