Home / 785,538.48-1,178,824.40-430,801.62

Finding the Fourth Proportional to 785,538.48, 1,178,824.40 and 430,801.62

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Solution

The fourth proportional to 785,538.48, 1,178,824.40 and 430,801.62 is: 646,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,538.48 : 1,178,824.40 = 430,801.62 : x
  2. Step 2: Convert to fraction form
    785,538.48/1,178,824.40 = 430,801.62/x
  3. Step 3: Cross multiply
    785,538.48x = 1,178,824.40 × 430,801.62
  4. Step 4: Simplify right side
    785,538.48x = 507,839,461,215.53
  5. Step 5: Solve for x
    x = 507,839,461,215.53/785,538.48
  6. Step 6: Final answer
    x = 646,485.79

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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.