Home / 870,831.36-1,306,240.56-473,994.72

Finding the Fourth Proportional to 870,831.36, 1,306,240.56 and 473,994.72

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Solution

The fourth proportional to 870,831.36, 1,306,240.56 and 473,994.72 is: 710,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,831.36 : 1,306,240.56 = 473,994.72 : x
  2. Step 2: Convert to fraction form
    870,831.36/1,306,240.56 = 473,994.72/x
  3. Step 3: Cross multiply
    870,831.36x = 1,306,240.56 × 473,994.72
  4. Step 4: Simplify right side
    870,831.36x = 619,151,128,489.84
  5. Step 5: Solve for x
    x = 619,151,128,489.84/870,831.36
  6. Step 6: Final answer
    x = 710,988.55

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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.