Home / 1,315,870.60-1,973,870.70-686,014.60

Finding the Fourth Proportional to 1,315,870.60, 1,973,870.70 and 686,014.60

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Solution

The fourth proportional to 1,315,870.60, 1,973,870.70 and 686,014.60 is: 1,029,055.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,870.60 : 1,973,870.70 = 686,014.60 : x
  2. Step 2: Convert to fraction form
    1,315,870.60/1,973,870.70 = 686,014.60/x
  3. Step 3: Cross multiply
    1,315,870.60x = 1,973,870.70 × 686,014.60
  4. Step 4: Simplify right side
    1,315,870.60x = 1,354,104,118,712.22
  5. Step 5: Solve for x
    x = 1,354,104,118,712.22/1,315,870.60
  6. Step 6: Final answer
    x = 1,029,055.68

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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.