Home / 1,225,168,419.65-1,690,875,357.72-696,611,602.45

Finding the Fourth Proportional to 1,225,168,419.65, 1,690,875,357.72 and 696,611,602.45

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Solution

The fourth proportional to 1,225,168,419.65, 1,690,875,357.72 and 696,611,602.45 is: 961,405,284.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,168,419.65 : 1,690,875,357.72 = 696,611,602.45 : x
  2. Step 2: Convert to fraction form
    1,225,168,419.65/1,690,875,357.72 = 696,611,602.45/x
  3. Step 3: Cross multiply
    1,225,168,419.65x = 1,690,875,357.72 × 696,611,602.45
  4. Step 4: Simplify right side
    1,225,168,419.65x = 1,177,883,392,476,091,904
  5. Step 5: Solve for x
    x = 1,177,883,392,476,091,904/1,225,168,419.65
  6. Step 6: Final answer
    x = 961,405,284.03

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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.