Home / 507,631.14-761,448.47-128,551.77

Finding the Fourth Proportional to 507,631.14, 761,448.47 and 128,551.77

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Solution

The fourth proportional to 507,631.14, 761,448.47 and 128,551.77 is: 192,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,631.14 : 761,448.47 = 128,551.77 : x
  2. Step 2: Convert to fraction form
    507,631.14/761,448.47 = 128,551.77/x
  3. Step 3: Cross multiply
    507,631.14x = 761,448.47 × 128,551.77
  4. Step 4: Simplify right side
    507,631.14x = 97,885,547,939.53
  5. Step 5: Solve for x
    x = 97,885,547,939.53/507,631.14
  6. Step 6: Final answer
    x = 192,828.10

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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.