Home / 1,215,785,418.51-1,677,785,312.37-658,868,465.57

Finding the Fourth Proportional to 1,215,785,418.51, 1,677,785,312.37 and 658,868,465.57

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Solution

The fourth proportional to 1,215,785,418.51, 1,677,785,312.37 and 658,868,465.57 is: 909,239,260.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,785,418.51 : 1,677,785,312.37 = 658,868,465.57 : x
  2. Step 2: Convert to fraction form
    1,215,785,418.51/1,677,785,312.37 = 658,868,465.57/x
  3. Step 3: Cross multiply
    1,215,785,418.51x = 1,677,785,312.37 × 658,868,465.57
  4. Step 4: Simplify right side
    1,215,785,418.51x = 1,105,439,834,308,716,160
  5. Step 5: Solve for x
    x = 1,105,439,834,308,716,160/1,215,785,418.51
  6. Step 6: Final answer
    x = 909,239,260.05

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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.