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Finding the Fourth Proportional to 870,070, 1,200,696.96 and 530,608.72

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Solution

The fourth proportional to 870,070, 1,200,696.96 and 530,608.72 is: 732,240.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,070 : 1,200,696.96 = 530,608.72 : x
  2. Step 2: Convert to fraction form
    870,070/1,200,696.96 = 530,608.72/x
  3. Step 3: Cross multiply
    870,070x = 1,200,696.96 × 530,608.72
  4. Step 4: Simplify right side
    870,070x = 637,100,277,053.49
  5. Step 5: Solve for x
    x = 637,100,277,053.49/870,070
  6. Step 6: Final answer
    x = 732,240.25

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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.