Home / 1,399,683.48-1,931,624.60-787,875.72

Finding the Fourth Proportional to 1,399,683.48, 1,931,624.60 and 787,875.72

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Solution

The fourth proportional to 1,399,683.48, 1,931,624.60 and 787,875.72 is: 1,087,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,683.48 : 1,931,624.60 = 787,875.72 : x
  2. Step 2: Convert to fraction form
    1,399,683.48/1,931,624.60 = 787,875.72/x
  3. Step 3: Cross multiply
    1,399,683.48x = 1,931,624.60 × 787,875.72
  4. Step 4: Simplify right side
    1,399,683.48x = 1,521,880,122,494.71
  5. Step 5: Solve for x
    x = 1,521,880,122,494.71/1,399,683.48
  6. Step 6: Final answer
    x = 1,087,303.05

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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.